CN107838199A - High strength band steel leveling rectifys technique - Google Patents
High strength band steel leveling rectifys technique Download PDFInfo
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- CN107838199A CN107838199A CN201711307007.8A CN201711307007A CN107838199A CN 107838199 A CN107838199 A CN 107838199A CN 201711307007 A CN201711307007 A CN 201711307007A CN 107838199 A CN107838199 A CN 107838199A
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- straightener
- strip
- control
- planisher
- plate shape
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/06—Removing local distortions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2263/00—Shape of product
- B21B2263/04—Flatness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention discloses a kind of high strength band steel leveling to rectify technique, it is characterized in that hot-rolling high-strength steel plate or strip pass sequentially through entrance straightener, planisher, outlet straightener, completed using aligning, smooth, aligning clustered operation to belt plate shape, the adjustment of surface quality, mechanical performance, residual stress；Strip is slightly rectified using entrance straightener, on the one hand improves incoming profile, on the other hand reduces belt steel surface iron scale；Smooth, improvement belt plate shape is carried out to strip using planisher, adjusts strip mechanical performance, improvement strip surface quality；It is smart to strip progress strong using straightener is exported, improve caused plate shape problem do not eliminated in formation process and new, caused residual stress do not eliminated in elimination formation process and new.
Description
Technical field
The present invention relates to high strength band steel leveling to rectify technique, and field is finished suitable for hot rolling and cold rolling high strength band steel.
Technical background
The demand of in the market high-strength steel increasingly increases, the accounting more and more higher of high-strength steel in the strip of each steel mill's production（It is main
Refer to strip more than yield strength 400Mpa）, the ratio of some newly-built producing line high-strength steel is more than 50%.Hot-rolling high-strength steel plate
Shape is poor, typically can not directly deliver goods, it is necessary to client could be handed over to use by being further processed to improvement plate shape and surface quality.
Each factory improves the plate shape of hot-rolling high-strength steel using flattening process both at home and abroad at present.It is high-strength using traditional flattening process production
Steel be present：1st, because intensity is too high, smooth ability is inadequate, and a time is smooth can not to meet product quality requirement, generally
Need multi-pass smooth, have a strong impact on unit production capacity；2nd, larger residual stress be present after smooth, occur after causing strip cutting plate
Deformation；3rd, roll consumption is big, and the roll consumption for producing high-strength steel is more than twice of mild steel；4th, roller matching is complicated, because high-strength
The roll-force that steel production needs is larger, can not meet rolling requirements using plain-barreled roll, will be according to different strips, roll-force during production
Match different roller shapes；5th, plate shape is undesirable after smooth, it is smooth after plate shape majority in 15 more than I-units, can not meet
All customer requirements；Wherein, I-units is the standard unit of description plate shape, and it is defined as follows：
Plate shape value represents with I units, is the multiple of relative rate elongation 105, I=(Δ L/L) * 105；Extension amount Δ L=L-Lo；
L=strip stretch after length；Lo=strip upright projection length.6th, thicker strip is batched in the presence of volume is not tight, volume is uneven, loose winding, tower
The problems such as shape.
Requirement in face of growing high-strength steel demand and to high-strength steel product quality, traditional high-strength steel flattening process
Market needs can not be met, high-strength steel finishing is also always the problem of Steel-rolling Industry.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of high strength band steel leveling and rectifys technique, and it is high-strength to solve current hot rolling
Drawbacks described above problem present in steel flattening process production process.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of high strength band steel leveling rectifys technique, it is characterised in that hot-rolling high-strength steel plate or strip pass sequentially through entrance straightener, put down
Complete machine, outlet straightener, completed using aligning, smooth, aligning clustered operation to belt plate shape, surface quality, mechanical performance, residual
The adjustment of residue stress；Strip is slightly rectified using entrance straightener, on the one hand improves incoming profile, on the other hand reduces strip
Scale on surface；Smooth, improvement belt plate shape is carried out to strip using planisher, adjusts strip mechanical performance, improvement strip
Surface quality；Strip progress essence is rectified using straightener is exported, improves caused plate shape do not eliminated in formation process and new and asks
Topic, eliminate caused residual stress do not eliminated in formation process and new.
Further, entrance straightener, planisher, outlet straightener are each front and rear is respectively provided with encoder or laser velocimeter
Steel plate or strip elongation percentage are measured, for measuring elongation percentage value and total elongation percentage value of the strip in each stage.
Further, uncoiler is set in front of entrance straightener, coiling machine is set at outlet straightener rear；In uncoiling
Inlet porting slewing rollers between machine and entrance straightener, outlet turning roller is set between outlet straightener and coiling machine.
Further, the adjustment to belt plate shape, surface quality, mechanical performance, residual stress uses three kinds of control models
Carry out respectively：Using Strip Shape Control as holotype, based on strip mechanical performance and take into account Strip Shape Control pattern, with strip mechanicalness
Based on energy and take into account cancellation band residual stress of steel and Strip Shape Control pattern.
Further, using Strip Shape Control as under holotype, entrance straightener, planisher, the running parameter for exporting straightener
Set and adjust all in accordance with respective plate shape improvement, ensure final product plate shape.
Further, the running parameter comprises at least：Drafts, the tension force of each roller of entrance straightener；Planisher rolls
Power processed, bending roller force, tension force, roller declination value, roller shape；Export drafts, the tension force of each roller of straightener.
Further, based on strip mechanical performance and take into account under Strip Shape Control pattern, according to strip breaking elongation, respectively
Set entrance straightener, planisher, the elongation percentage value for exporting straightener, in production process when breaking elongation and setting value exist it is inclined
Elongation percentage deviation is eliminated by adjusting planisher roll-force when poor, ensures strip breaking elongation, so as to control strip mechanicalness
Energy.
Further, based on strip mechanical performance and take into account under cancellation band residual stress of steel and Strip Shape Control pattern, control
Strip breaking elongation processed, entrance straightener, planisher, the elongation percentage value for exporting straightener are set respectively, to ensure outlet aligning
Based on machine elongation percentage.
Further, entrance straightener uses three kinds of control models：Aligning pattern, rewinding pattern, threading pattern；Flattening die
Formula mainly plays straightening function, wherein, straightener is tentatively aligned using position control to incoming band steel on press control, is improved
Incoming profile, the drafts of plate shape adjustment each roller of straightener is exported according to straightener, monitors straightener elongation percentage, is driven in control
Straightener uses servo antrol；
Rewinding pattern mainly plays tension adjustment, wherein, straightener uses Stress control on press control, is rectified in transmission control
Straight machine exports tension force using active control by the speed and direct torque straightener for adjusting straightener, provides and opens for coiling machine
Power, ensure that thicker strip batches effect；
Threading pattern mainly plays aligning and taken the lead, auxiliary threading effect, wherein, straightener is controlled using position on press control, is passed
The dynamic upper straightener of control uses active control, to taking the lead to align, aids in threading.
Further, planisher uses two kinds of control models：Permanent elongation control pattern and Constant dvaught pressure control pattern；It is permanent
Elongation control pattern mainly plays a part of to adjust strip mechanical performance, by adjusting planisher elongation control unit overall elongation
Rate；Constant dvaught pressure control pattern mainly plays a part of to improve plate shape and surface quality, and it is smooth to export plate shape adjustment according to planisher
Machine roll-force.
Further, outlet straightener use position control mode, primarily serves aligning strip, elimination residual stress and residual
The effect of remaining plate shape problem.
Strip shape of hot-rolled high-strength steel is poor, needs certain elongation percentage just to play improvement plate shape in production process and reaches production
The effect of quality requirement.There is planisher stronger plate shape to improve ability, but planisher rolling high-strength steel needs very big roll
Power processed can just roll out the elongation percentage of needs, and the increase of roll-force can cause roll bending increase, roller efficiency to reduce, and cause
It can not also ensure plate shape even if the elongation percentage for reaching certain；And smooth forward pull is larger, hightension partes tecta scoreboard shape problem, cause
Be limited plate shape improvement, meanwhile, it is smooth after strip certain residual stress be present.Multi-roll straightening machine passes through alternating bending
To improve plate shape, eliminate residual stress, and tension force is advantageous to straightener and played a role.
The present invention is slightly rectified using entrance straightener to entrance supplied materials, on the one hand：Reduce and produced in hot rolling and cooling procedure
Raw residual stress；On the one hand：Improve incoming profile, reduce supplied materials shape wave, reduce the load of planisher；On the one hand：By anti-
Multiple bending, which reduces belt steel surface iron scale, reduces planisher roller consumption.It is smooth to strip progress using planisher, pass through rolling one
Aspect improves strip surface quality；On the one hand belt plate shape is improved；On the one hand by adjusting elongation control strip mechanical performance.
Aligned using outlet straightener and strip progress essence is rectified, on the one hand improve belt plate shape, elimination planisher residual plate shape；One
Aspect utilizes effect of the tension force to straightener, eliminates the part plate shape problem that tension force is covered；On the one hand smooth remnants are effectively reduced
Stress, ensure the final plate shape and residual stress level of product.
Compared with traditional high-strength steel flattening process, the strong technique of leveling that the present invention uses smoothly solves traditional hot rolling height
The defects of under strong steel flattening process problem.Specifically the invention has the advantages that：
1st, high-strength steel is high in machining efficiency, and a time completes high-strength steel production.
2nd, product quality is more preferable, and outlet straightener essence can obtain more preferable plate shape and residual stress level after rectifying.
3rd, roll consumption is low, relatively conventional hot-rolled leveling, and planisher load of the present invention reduces, and effectively reduces roll consumption.
4th, surface quality is more preferable, and entrance straightener reduces iron scale, and planisher replicates gloss level of roll, obtains more preferable
Surface quality.
5th, rewinding pattern slab reeling quality is more preferable, and entrance straightener provides effective tension for coiling machine.
Brief description of the drawings
Accompanying drawing 1 is the set structure sketch that high strength band steel leveling of the present invention rectifys technique.
Embodiment
It is that the high strength band steel leveling implemented according to the present invention rectifys technique as shown in Figure 1, it is high-strength that technique productions is rectified using leveling
Steel, hot-rolling high-strength steel plate or strip 9 pass sequentially through entrance straightener 3, planisher 4, outlet straightener 5, complete to the plate of strip 9
The adjustment of shape, surface quality, mechanical performance, residual stress.
Entrance straightener 3, planisher 4, outlet straightener 5 are each front and rear to be respectively provided with encoder or laser velocimeter 8 to steel
Plate or strip elongation percentage measure, for measuring elongation percentage value and total elongation percentage value of the strip 9 in each stage.
Further, uncoiler 1 is set in the front of entrance straightener 3, coiling machine 7 is set at the outlet rear of straightener 5；
Inlet porting slewing rollers 2 between uncoiler 1 and entrance straightener 3, outlet is set to turn between outlet straightener 5 and coiling machine 7
To roller 6.
It is preferred that entrance straightener 3, outlet straightener 5 are multi-roll straightening machine.
Strip is slightly rectified using entrance straightener 3, on the one hand improves incoming profile, on the other hand reduces belt steel surface
Iron scale；Smooth, improvement belt plate shape is carried out to strip using planisher, adjusts strip mechanical performance, improvement belt steel surface
Quality；Strip progress essence is rectified using straightener is exported, improves caused plate shape problem do not eliminated in formation process and new, disappears
Except caused residual stress do not eliminated in formation process and new.
2nd, unit production model and control mode：
Based on Strip Shape Control：To improve high-strength steel plate shape as target, entrance straightener, planisher, the parameter for exporting straightener
Set and adjust all in accordance with respective plate shape improvement, ensure final product plate shape.
Based on strip mechanical performance, Strip Shape Control is taken into account：According to strip breaking elongation, set respectively entrance straightener,
Planisher, the elongation percentage value for exporting straightener, put down when breaking elongation and setting value have deviation by adjustment in production process
Complete machine roll-force eliminates elongation percentage deviation, ensures strip breaking elongation, so as to control strip mechanical performance.
Based on strip mechanical performance, cancellation band residual stress of steel and Strip Shape Control are taken into account：Strip breaking elongation is controlled, point
Not She Ding entrance straightener, planisher, export straightener elongation percentage value, with ensure outlet straightener elongation percentage based on.
3rd, leveling rectifys each equipment control model of technique and strategy：
The control model of entrance straightener 3：
Aligning pattern：Straightener is tentatively aligned using position control to incoming band steel on press control, improves incoming profile.
The drafts of plate shape adjustment each roller of straightener is exported according to straightener, monitors straightener elongation percentage.The upper straightener of transmission control is adopted
Use servo antrol.Mainly play straightening function.
Rewinding pattern：Straightener uses Stress control on press control, and the upper straightener of transmission control is led to using active control
The speed and direct torque straightener outlet tension force of adjustment straightener are crossed, tension force is provided for coiling machine, ensures that thicker strip batches effect.
Mainly play tension adjustment.
Threading pattern：Straightener is controlled using position on press control, and the upper straightener of transmission control uses active control, right
Take the lead to be aligned, aid in threading.Mainly play aligning to take the lead, auxiliary threading effect.
Planisher 4 uses 2 kinds of control models：
Permanent elongation control：By adjusting planisher elongation control unit breaking elongation.It is main to play adjustment strip mechanical performance
Effect.
Constant dvaught pressure control：Plate shape adjustment planisher roll-force is exported according to planisher.Main rise improves plate shape and surface
The effect of quality.
Export the control model of straightener 5：Export straightener to control using position, primarily serve aligning strip, eliminate remaining
The effect of stress and remaining plate shape problem.
4th, leveling is rectified process instrumentation configuration and used：
Configuration codes device or laser velocimeter 8 measure to entrance straightener elongation percentage before and after entrance straightener 3, smooth
Configuration codes device or laser velocimeter 8 are measured to planisher elongation percentage before and after machine 4, and in outlet, the front and rear configuration of straightener 5 is compiled
Code device or laser velocimeter 8 measure to outlet straightener elongation percentage.Can measure strip 9 each stage elongation percentage value and
Total elongation percentage value.
Claims (10)
1. a kind of high strength band steel leveling rectifys technique, it is characterised in that hot-rolling high-strength steel plate or strip pass sequentially through entrance straightener,
Planisher, outlet straightener, using aligning, it is smooth, aligning clustered operation complete to belt plate shape, surface quality, mechanical performance,
The adjustment of residual stress；Strip is slightly rectified using entrance straightener, on the one hand improves incoming profile, on the other hand reduces band
Steel surface iron scale；Smooth, improvement belt plate shape is carried out to strip using planisher, adjusts strip mechanical performance, improvement band
Steel surface quality；Smart strong, caused plate shape do not eliminated in improvement formation process and new is carried out to strip using straightener is exported
Problem, eliminate caused residual stress do not eliminated in formation process and new.
2. high strength band steel leveling according to claim 1 rectifys technique, it is characterised in that：Entrance straightener, planisher, outlet
Straightener is each front and rear to be respectively provided with encoder or laser velocimeter steel plate or strip elongation percentage is measured, for measuring strip
Elongation percentage value and total elongation percentage value in each stage.
3. high strength band steel leveling according to claim 1 or 2 rectifys technique, it is characterised in that：Set in front of entrance straightener
Uncoiler is put, coiling machine is set at outlet straightener rear；The inlet porting slewing rollers between uncoiler and entrance straightener,
Export and outlet turning roller is set between straightener and coiling machine.
4. high strength band steel leveling according to claim 3 rectifys technique, it is characterised in that：To belt plate shape, surface quality, machine
The adjustment of tool performance, residual stress is carried out respectively using three kinds of control models：Using Strip Shape Control as holotype, with strip mechanicalness
Based on energy and take into account Strip Shape Control pattern, based on strip mechanical performance and take into account cancellation band residual stress of steel and Strip Shape Control mould
Formula.
5. high strength band steel leveling according to claim 4 rectifys technique, it is characterised in that：Using Strip Shape Control as under holotype,
Entrance straightener, planisher, the running parameter of outlet straightener set and adjusted all in accordance with respective plate shape improvement, protect
Demonstrate,prove final product plate shape；The running parameter comprises at least：Drafts, the tension force of each roller of entrance straightener；Planisher rolls
Power processed, bending roller force, tension force, roller declination value, roller shape；Export drafts, the tension force of each roller of straightener.
6. high strength band steel leveling according to claim 4 rectifys technique, it is characterised in that：It is based on strip mechanical performance and simultaneous
Care under Strip Shape Control pattern, according to strip breaking elongation, set entrance straightener, planisher, the extension for exporting straightener respectively
Rate value, it is inclined to eliminate elongation percentage by adjusting planisher roll-force when breaking elongation and setting value have deviation in production process
Difference, ensure strip breaking elongation, so as to control strip mechanical performance.
7. high strength band steel leveling according to claim 4 rectifys technique, it is characterised in that：It is based on strip mechanical performance and simultaneous
Care under cancellation band residual stress of steel and Strip Shape Control pattern, control strip breaking elongation, set entrance straightener, smooth respectively
Machine, the elongation percentage value for exporting straightener, based on guarantee outlet straightener elongation percentage.
8. high strength band steel leveling according to claim 4 rectifys technique, it is characterised in that：Entrance straightener is using three kinds of controls
Pattern：Aligning pattern, rewinding pattern, threading pattern；Aligning pattern mainly plays straightening function, wherein, straightener on press control
Incoming band steel is tentatively aligned using position control, improves incoming profile, plate shape adjustment straightener is exported according to straightener
The drafts of each roller, monitors straightener elongation percentage, and the upper straightener of transmission control uses servo antrol；
Rewinding pattern mainly plays tension adjustment, wherein, straightener uses Stress control on press control, is rectified in transmission control
Straight machine exports tension force using active control by the speed and direct torque straightener for adjusting straightener, provides and opens for coiling machine
Power, ensure that thicker strip batches effect；
Threading pattern mainly plays aligning and taken the lead, auxiliary threading effect, wherein, straightener is controlled using position on press control, is passed
The dynamic upper straightener of control uses active control, to taking the lead to align, aids in threading.
9. high strength band steel leveling according to claim 4 rectifys technique, it is characterised in that：Planisher is using two kinds of control moulds
Formula：Permanent elongation control pattern and Constant dvaught pressure control pattern；Permanent elongation control pattern mainly plays adjustment strip mechanical performance
Effect, by adjusting planisher elongation control unit breaking elongation；Constant dvaught pressure control pattern mainly rise improve plate shape and
The effect of surface quality, plate shape adjustment planisher roll-force is exported according to planisher.
10. high strength band steel leveling according to claim 4 rectifys technique, it is characterised in that：Straightener is exported to control using position
Molding formula, aligning strip is primarily served, eliminate the effect of residual stress and remaining plate shape problem.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380701A (en) * | 2018-05-23 | 2018-08-10 | 文丹 | A kind of feeding straightening integrated machine of cold-rolled steel coils |
| CN108714628A (en) * | 2018-04-24 | 2018-10-30 | 日照钢铁控股集团有限公司 | A kind of control method of belt plate shape |
| CN108941211A (en) * | 2018-08-21 | 2018-12-07 | 首钢京唐钢铁联合有限责任公司 | Hot-rolled leveling unit and the method for handling strip |
| CN109079002A (en) * | 2018-08-15 | 2018-12-25 | 江苏通光光缆有限公司 | Stainless steel band curved surface flattening device |
| CN109332386A (en) * | 2018-09-29 | 2019-02-15 | 中冶南方工程技术有限公司 | A kind of finely finishing method improving hot-strip straightness |
| CN109351783A (en) * | 2018-10-09 | 2019-02-19 | 首钢京唐钢铁联合有限责任公司 | A kind of method of the ultralow roughness guide rail steel of skin pass rolling |
| CN109772932A (en) * | 2018-12-25 | 2019-05-21 | 厦门航天思尔特机器人系统股份公司 | One kind being applied to aluminum alloy pattern plate straightening device and its application method |
| CN110465561A (en) * | 2019-08-20 | 2019-11-19 | 中冶赛迪工程技术股份有限公司 | A kind of strong technique of hot-strip leveling |
| CN111215455A (en) * | 2018-11-26 | 2020-06-02 | 宝山钢铁股份有限公司 | Device and method for controlling flat plate shape of hot-rolled thin strip steel |
| CN111254265A (en) * | 2019-12-31 | 2020-06-09 | 中冶南方工程技术有限公司 | Method and device for improving internal stress distribution of strip steel |
| CN111604697A (en) * | 2020-05-31 | 2020-09-01 | 日照宝华新材料有限公司 | Control method for transverse folding defect of thin-specification low-carbon steel |
| CN113857297A (en) * | 2021-11-01 | 2021-12-31 | 中冶赛迪工程技术股份有限公司 | Method and system for controlling plate shape of straightening machine |
| CN114178347A (en) * | 2021-11-23 | 2022-03-15 | 中冶南方工程技术有限公司 | Strip steel leveling method |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714628A (en) * | 2018-04-24 | 2018-10-30 | 日照钢铁控股集团有限公司 | A kind of control method of belt plate shape |
| CN108380701A (en) * | 2018-05-23 | 2018-08-10 | 文丹 | A kind of feeding straightening integrated machine of cold-rolled steel coils |
| CN109079002A (en) * | 2018-08-15 | 2018-12-25 | 江苏通光光缆有限公司 | Stainless steel band curved surface flattening device |
| CN109079002B (en) * | 2018-08-15 | 2024-03-08 | 江苏通光光缆有限公司 | Stainless steel belt curved surface flattening device |
| CN108941211A (en) * | 2018-08-21 | 2018-12-07 | 首钢京唐钢铁联合有限责任公司 | Hot-rolled leveling unit and the method for handling strip |
| CN109332386A (en) * | 2018-09-29 | 2019-02-15 | 中冶南方工程技术有限公司 | A kind of finely finishing method improving hot-strip straightness |
| CN109351783A (en) * | 2018-10-09 | 2019-02-19 | 首钢京唐钢铁联合有限责任公司 | A kind of method of the ultralow roughness guide rail steel of skin pass rolling |
| CN111215455A (en) * | 2018-11-26 | 2020-06-02 | 宝山钢铁股份有限公司 | Device and method for controlling flat plate shape of hot-rolled thin strip steel |
| CN109772932A (en) * | 2018-12-25 | 2019-05-21 | 厦门航天思尔特机器人系统股份公司 | One kind being applied to aluminum alloy pattern plate straightening device and its application method |
| CN110465561A (en) * | 2019-08-20 | 2019-11-19 | 中冶赛迪工程技术股份有限公司 | A kind of strong technique of hot-strip leveling |
| CN111254265A (en) * | 2019-12-31 | 2020-06-09 | 中冶南方工程技术有限公司 | Method and device for improving internal stress distribution of strip steel |
| CN111254265B (en) * | 2019-12-31 | 2021-11-05 | 中冶南方工程技术有限公司 | Method and device for improving internal stress distribution of strip steel |
| CN111604697A (en) * | 2020-05-31 | 2020-09-01 | 日照宝华新材料有限公司 | Control method for transverse folding defect of thin-specification low-carbon steel |
| CN111604697B (en) * | 2020-05-31 | 2021-05-14 | 日照宝华新材料有限公司 | Control method for transverse folding defect of thin-specification low-carbon steel |
| CN113857297A (en) * | 2021-11-01 | 2021-12-31 | 中冶赛迪工程技术股份有限公司 | Method and system for controlling plate shape of straightening machine |
| CN113857297B (en) * | 2021-11-01 | 2023-12-15 | 中冶赛迪工程技术股份有限公司 | Straightening machine plate shape control method and system |
| CN114178347A (en) * | 2021-11-23 | 2022-03-15 | 中冶南方工程技术有限公司 | Strip steel leveling method |
| CN114178347B (en) * | 2021-11-23 | 2023-11-21 | 中冶南方工程技术有限公司 | Strip steel leveling method |
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| CN107838199B (en) | 2019-11-05 |
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